What Is This Purple Plus Sign?

e9uations World 5 - The game "e9uations" demo that I played last year was incredibly cool and impressive, and (as I have completed and recorded the whole game while playtesting) I now show you the footage. Chapter 1 and 2:    • This is probably the best math game.   Chapter 3:    • The Unhinged Equation Game Has Finally Rel...   Check the full playlist:    • e9uations   Note that there are some graphical differences and big level differences in this, so if you want maximum unspoilers play the whole thing! https://store.steampowered.com/app/33... Short games playlist:    • ALL Short Games / One-Off Content   "secret" discord:   / discord